TWI640698B - Angle-adjusted elbow joint structure - Google Patents

Abstract

An angle-adjusted elbow joint structure is composed of a first pivoting plate and a second pivoting plate A central shaft is formed which penetrates the axis of the first pivoting plate and the second pivoting plate to closely pivot the two. A wearable cushion is disposed between the first pivoting plate and the second pivoting plate, and one of the side surfaces of the wearable cushion is provided with a plurality of circular centers arranged in a center. Positioning a pocket, the second pivoting plate facing the positioning pocket is at an eccentric position and at a position corresponding to the positioning pocket, at least an axial cylinder is disposed in an axial manner, and a spring is disposed in the axial cylinder and is disposed by the spring a ball that is pushed up, the ball can be embedded in the corresponding positioning pocket, and the first pivoting plate and the second pivoting plate have better fit tightness by the setting of the wear pad, suitable for application The light weight object is connected to one of the pivot plates. If the heavier object is to be connected to one of the pivoting plates, the setting of the above-mentioned wear-resistant cushion is eliminated, and the surface of the other pivoting plate facing the ball is provided with the center of the central axis as the center and A plurality of positioning pockets are arranged in a circular shape, and a part of the bead surface of the ball is embedded in the corresponding positioning pocket to position the pivoting angle of both the first pivoting plate and the second pivoting plate. The pivot plate of the axial tube is further provided with a limiting hole, and the limiting hole is located on the same circumference as the hole center of the axial tube, and a bolt is arranged inside the limiting hole, and the end of the bolt is The system can be directly or indirectly embedded in a corresponding positioning pocket to position the pivoting angle. Thereby, the pivoting angle of both the first pivoting plate and the second pivoting plate can be positioned to be more reliable.

Description

Angle-adjusted elbow joint structure

The invention relates to an elbow joint structure with an angle adjustment, in particular to make the positioning of the elbow joint more accurate and stable after adjusting the angle.

According to the Taiwan Patent Publication No. 447312 and the Chinese Patent No. ZL01229512.4, the patents invented by the inventors disclose the toggle mechanism (20) and the deflection device (34) in the specification and drawings, but the toggle mechanism (20) After the deflection device (34) is loaded with the load and adjusted by the tilt angle, the tilt angle often causes the angle slip to change due to the load-bearing and eccentric relationship. The angle is not fixed, and there will be a sudden drop in the object and hitting the person. The present inventors have made improvements in view of this and have produced the present invention.

Accordingly, it is an object of the present invention to provide an elbow joint structure in which the fixing of the elbow joint of the fixed object can be surely stabilized after the angle is adjusted.

The main feature of the present invention is that a central shaft is pivotally connected at a center of both the first pivoting plate and the second pivoting plate, and a wear-resistant cushion is disposed therebetween; the first pivoting a plurality of concave nests are arranged on the side facing the second pivoting plate end, and the arranged positions of the concave nests are located on a circumference formed by the center of the axial hole, and each of the concave nests is individually placed in a circle Shaped beads, part of the bead of the nest beads are exposed outside the concave nest. The wear-resistant cushion faces the second pivoting plate side, and is provided with a plurality of positioning recesses centered on the center and arranged in a circular shape, and the second pivoting plate surface facing the positioning recess is in an eccentric position And a plurality of axial cylinders are disposed in an axial manner, and a spring and a ball pushed by the spring are disposed in the axial cylinder, and the ball portion is embedded in the ball surface In the corresponding positioning pocket, by the setting of the wear-resistant cushion, the first pivoting plate and the second pivoting plate are better in tightness when being forced, and when the angle is adjusted, the bead is attached The wear-resistant cushion has a sinuous side when it slides, and does not cause any sliding and can naturally adjust the adjusted angle. The elbow joint is suitable for use with lighter weight items.

Another feature of the present invention is that a first pivoting plate and a second pivoting plate are pivotally connected by a central axis, and one of the pivoting plates is provided with a center and a center. a plurality of positioning pockets arranged in a shape, the plate surface of the other pivoting plate facing the positioning pocket is at an eccentric position and at an position corresponding to the positioning pocket, at least one axial cylinder is disposed in an axial manner, the axial cylinder A spring is disposed therein and a ball is pushed by the spring, and the ball can be embedded in the corresponding positioning pocket. The pivot plate of the axial tube is further provided with a limiting hole, and the limiting hole is located on the same circumference as the hole center of the axial tube, and a bolt is arranged inside the limiting hole, and the end of the bolt is The pivoting angles of the first pivoting plate and the second pivoting plate can be directly or indirectly embedded in a corresponding positioning pocket, whereby the elbow joint is suitable for use with a weighted object.

Part of the first embodiment

1‧‧‧ elbow joint

2‧‧‧ far infrared illuminator

20‧‧‧ illumination cover

10‧‧‧First pivoting board

11‧‧‧Second pivoting plate

12‧‧‧Abrasive cushion

13‧‧‧ center axis

101‧‧‧ shaft hole

102‧‧‧ concave nest

103‧‧‧ nest beads

104‧‧‧Connecting parts

110‧‧‧Axis hole

111‧‧‧Axial cylinder

112‧‧‧ Spring

113‧‧‧ balls

114‧‧‧垣

115‧‧‧Contents

21‧‧‧ pole

120‧‧‧ shaft hole

121‧‧‧Positioning pocket

130‧‧‧shims

131‧‧‧ nuts

Second embodiment

3‧‧‧ elbow joint

30‧‧‧First pivoting board

31‧‧‧Second pivoting plate

32‧‧‧ center axis

33‧‧‧Bolts

300‧‧‧ shaft hole

301‧‧‧Locating pocket

302‧‧‧Guide

310‧‧‧Axis hole

311‧‧‧Axial hole

312‧‧‧ balls

313‧‧ ‧ spring

314‧‧‧ teeth plug

315‧‧‧ embedded port

316‧‧‧Limited holes

320‧‧‧shims

321‧‧‧ nuts

330‧‧‧Limited beads

FIG. 1 is a perspective view of an application of an embodiment of the present invention.

Fig. 2 is an exploded perspective view showing the elbow joint of the first embodiment of the present invention.

Fig. 3 is a sectional view showing the combination of the elbow joint of the first embodiment of the present invention.

Fig. 4 is a view showing an adjustment reference of the elbow joint of the first embodiment of the present invention.

Fig. 5 is an exploded perspective view showing the elbow joint of the second embodiment of the present invention.

Fig. 6 is a sectional view showing the combination of the elbow joint of the second embodiment of the present invention.

Fig. 7 is a view showing another structural view of the bolt of the elbow joint of the second embodiment of the present invention.

Fig. 8 is a view showing an adjustment reference of the elbow joint of the second embodiment of the present invention.

The technical means and structure of the present invention for achieving the above objects and effects will be described below by way of the following two embodiments.

Please refer to the arrangement position and structure correlation diagram of the elbow joint 1 of the first embodiment shown in FIGS. 1 to 4. The elbow joint 1 can be applied to a lighter external member. As shown in FIG. 1, the elbow joint 1 is applied to the far infrared ray irradiator 2 to connect the light-weight illuminating cover 20.

The elbow joint 1 comprises a first pivoting plate 10, a second pivoting plate 11, a wear-resistant cushion 12 and a central shaft 13. The wear pad 12 is disposed between the first pivoting plate 10 and the second pivoting plate 11 , and the central axis 13 extends through the first pivoting plate 10 , the second pivoting plate 11 , and the resistant portion Grinding the center of the cushions 12, the three are pivoted and axially tightly pressed. The first pivoting plate 10 has a shaft hole 101 at the center, and a plurality of recesses 102 are disposed on the side facing the end of the second pivoting plate 11 , and the positions of the concave nests 102 are located in the axial hole. 101 is on the circumference of the center of the circle. A circular bead 103 is individually placed in each of the recesses 102, and a portion of the bead of the bead 103 is exposed outside the recess 102. An outer wall of the first pivoting plate 10 extends with a connecting member 104 for connecting the illumination cover 20.

The second pivoting plate 11 has a shaft hole 110 in the center. A plurality of axial cylinders 111 extending axially are disposed on a side facing the end of the first pivoting plate 10, and the cylindrical opening of the axial cylinders 111 faces the first pivoting plate 10. The axial cylinders 111 are arranged on a circumference formed by the center of the shaft hole 110. The inside of each of the axial cylinders 111 is a ball 112 and a ball pushed by the spring 112. 113. A part of the bead surface of the ball 113 is exposed outside the mouth of the barrel. The second pivoting plate 11 faces the outer edge of the first pivoting plate 10 and is provided with a ring damper 114 that encloses a receiving section 115. An outer edge of the second pivoting plate 11 is coupled to one end of a rod 21 of the far-infrared illuminator 2 (Fig. 1).

The wear-resistant cushion 12 is soft and wear-resistant, for example, made of nylon plastic, and is disposed between the first and second pivoting plates 10, 11 and embedded in the receiving section 115. The center has a shaft hole 120 through which the aforementioned central shaft 13 passes. The surface of the bead 103 is a plane facing the ball 113 side and corresponding to the position of the ball 113, and a plurality of positioning recesses 121 are arranged in a circular arrangement, and a part of the bead surface of the ball 113 is embedable corresponding to the plane Positioning is located within the pocket 121.

The central shaft 13 can be a screw combined with a gasket 130 and a nut 131. One end of the central shaft 13 sequentially penetrates the shaft holes 101, 120, 110 of the first pivoting plate 10, the wear-resistant cushion 12 and the second pivoting plate 11, and then the spacer 130 is inserted. The nut 131 is screwed, the first pivoting plate 10, the wear-resistant cushion 12 and the second pivoting plate 11 are pivotally and axially tightly pressed, so that the three are closely fitted but Can pivot, as shown in Figure 3.

After the above components are sequentially combined, as shown in FIG. The wearable cushion 12 is disposed between the bead 103 and the ball 113. The wearable cushion 12 is soft and sturdy, and is indirectly pushed by the spring 112 to closely fit the bead 103, plus The central shaft 13 and the axial direction of the nut 131 are pressed so that the frictional resistance between the bead 103 and the wear pad 12 is at a pivoting angle, and the frictional resistance can be transmitted through the central shaft 13 and the nut 131. Adjust with tightness. After the adjustment angle is completed, the angle between the first pivoting plate 10 and the second pivoting plate 11 is naturally positioned and does not slip, as shown in FIG. However, the elbow joint 1 is suitable for use in connection with lightly weighted articles, such as the aforementioned light weight illumination cover 20.

Please refer to the arrangement position and structure correlation diagram of the elbow joint 3 of the second embodiment shown in FIGS. 5-8. The elbow joint 3 is not provided with the wear-resistant cushion 12 of the first embodiment, and can be applied to a heavier external object. For example, the pivoting of the middle portion of the far-infrared illuminator 2 shown in FIG. 1 can be used for angle adjustment. The elbow joint 3 includes a first pivoting plate 30, a second pivoting plate 31, a central shaft 32 and a bolt 33. The first pivoting plate 30 has a shaft hole 300 at the center, and at least one side is provided with a plurality of equally spaced and circularly arranged positioning pockets 301 (in this embodiment, the two sides are simultaneously disposed, and the two sides are arranged concavely. A two-sided first pivoting plate of the hole 301, the positioning positions of the positioning holes 301 are located on a circumference formed by the center of the shaft hole 300. Adjacent positioning pockets 301 are connected by a guiding surface 302.

The second pivoting plate 31 has a shaft hole 310 at a central position, and is disposed at a position facing the positioning pocket 301 and corresponding to the positioning pocket 301, and is provided with a plurality of threaded axial directions in a through manner. A hole 311 is disposed in each of the axial holes 311 in sequence with a ball 312, a spring 313 and a tooth pin 314 having an external thread, wherein the ball 312 faces the positioning pocket 301, and a part of the bead surface of the ball 312 is The dental plug 314 and the spring 313 are pushed up into the positioning pocket 301. The second pivoting plate 31 of the embodiment is provided with two left and right sides, and an insertion opening 315 is provided in the middle for the first pivoting plate 30 to be embedded. One of the axial holes 311 is designed to form a limiting hole 316, and the limiting hole 316 is a screw hole.

The central shaft 32 is a screw, and is combined with a gasket 320 and a nut 321 . One end of the central shaft 32 sequentially penetrates the shaft holes 300 and 310 of the first pivoting plate 30 and the second pivoting plate 31, and then the gasket 320 is inserted and the nut 321 is screwed to the first pivot. The rotating plate 30 and the second pivoting plate 31 are pivotally connected and axially tightly pressed, so that the first pivoting plate 30 and the second pivoting plate 31 are closely fitted but pivotable, as shown in FIG.

The bolt 33 has one end penetrating through the limiting hole 316. The piercing end of the bolt 33 is indirectly embedded in the corresponding positioning pocket 301 via a limiting bead 330 (as shown in FIG. 6) or directly (as shown in FIG. 7). The pivoting angles of the first pivoting plate 30 and the second pivoting plate 31 are positioned. The bolt 33 is directly embedded in the corresponding positioning When the recess 301 is inside, as shown in FIG. 7, the piercing end of the bolt 33 is a circular arc surface so as to be embedded in the corresponding positioning recess 301.

When the above components are sequentially combined, as shown in FIG. The tightness when the angle is adjusted between the first pivoting plate 30 and the second pivoting plate 31 is adjusted by the tightness between the central shaft 32 and the nut 321 . When adjusting the angle, the bolt 33 is first retracted to make the end portion away from the positioning pocket 301, or the limiting bead 330 has a space away from the positioning pocket 301, and then the first pivoting plate 30 is rotated to make the first pivoting plate 30 center. The shaft 32 is rotated to adjust the angle, and the positioning pocket 301 also rotates along with the first pivoting plate 30 to slide the corresponding ball 312 until the adjustment angle stops at a desired angle. Then, the bolt 33 is screwed in again, so that the end of the bolt 33 is embedded in the positioning pocket 301, as shown in FIG. 7, or the indirect thrust limiting bead 312 enters the corresponding positioning pocket 301, as shown in FIG. The angle stops, as shown in Figure 8. Since the bolts 33 axially connect the first and second pivoting plates 30 and 31 in an eccentric position, the axial center position has the axial connection of the central shaft 32. Therefore, the first and second pivoting plates 30 and 31 are adjusted. After the angle, the angle is stopped and will not change, and it can be used for objects with heavier objects.

It can be seen from the above description that the first and second embodiments of the present invention can ensure that the adjusted angle is fixed and fixed in accordance with the weight of the connected object, thereby improving the conventional lack, and is progressive. If an application for a patent for invention is filed according to law, it will be reviewed and approved for patents.

Claims (3)

An angle-adjusted elbow joint structure includes a first pivoting plate, a second pivoting plate and a central shaft; wherein the first pivoting plate has a shaft hole in the center and faces the second pivoting plate The side of the end is provided with a plurality of concave nests, and the arrangement positions of the concave nests are located on a circumference formed by the center of the shaft hole; each of the concave nests is individually placed with a circular bead, and the nest beads are Part of the bead surface is exposed outside the concave nest; the second pivoting plate has a shaft hole at the center, and a plurality of axially extending axial cylinders are disposed on a side facing the first pivoting plate end, and the axial cylinders The cylindrical opening faces the nest beads; the axial cylinders are arranged on a circumference formed by the center of the shaft hole, and each of the axial cylinders is internally provided with a spring and a ball pushed by the spring a part of the bead surface of the ball is exposed outside the mouth of the barrel; the central axis, after one end penetrates the shaft hole of the first pivoting plate and the second pivoting plate, the first pivoting plate and the second pivoting The pivotal connection and the axial tightness of the plate make the first pivoting plate and the second pivoting plate closely fit; The utility model is characterized in that a wear-resistant cushion is disposed, the wear-resistant cushion is disposed between the first and second pivoting plates, and the center has a shaft hole for the central shaft to pass through, facing the side of the bead A plane, facing the ball side and corresponding to the ball, is provided with a plurality of positioning pockets arranged in a circular shape, and a part of the bead surface of the ball is positionally engageable in the corresponding positioning pocket. The angle-adjusted elbow joint structure of claim 1, wherein the second pivoting plate faces the outer edge of the first pivoting plate end, and is provided with a ring damper, and the dam is enclosed by a receiving section for The wear resistant cushion is embedded. The angle-adjusted elbow joint structure according to any one of claims 1 to 2, wherein the central shaft is a screw, and is combined with a gasket and a nut.